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How to recognize CNC machine tools

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  • Time of issue:2020-10-14
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(Summary description)1. A CNC machine tool is a machine tool that uses digital control technology to automatically control the machining process of the machine tool. The CNC machine tool consists of the following parts: programming and program carrier, input device, numerical control device and strong current control device, drive system and position detection device, auxiliary control device, and machine tool body.

How to recognize CNC machine tools

(Summary description)1. A CNC machine tool is a machine tool that uses digital control technology to automatically control the machining process of the machine tool. The CNC machine tool consists of the following parts: programming and program carrier, input device, numerical control device and strong current control device, drive system and position detection device, auxiliary control device, and machine tool body.

  • Categories:Company News
  • Author:
  • Origin:
  • Time of issue:2020-10-14
  • Views:0
Information

1. A CNC machine tool is a machine tool that uses digital control technology to automatically control the machining process of the machine tool. The CNC machine tool consists of the following parts: programming and program carrier, input device, numerical control device and strong current control device, drive system and position detection device, auxiliary control device, and machine tool body.

2,

1. The CNC program is a work instruction for the automatic machining of parts by the CNC machine tool. Based on the process analysis of the machined parts, determine the relative position of the part coordinate system on the machine tool coordinate system, that is, the installation position of the part on the machine tool; the size parameters of the relative movement of the tool and the part; the process route and cutting processing of the part processing The process parameters and the actions of auxiliary devices.

2. The function of the input device is to transfer and store the numerical control code on the program carrier (information carrier) into the numerical control system. Depending on the control storage medium, the input device can be an optoelectronic reader, a tape drive, or a floppy disk drive. Numerical control machine tool processing program can also be directly input into the numerical control system manually through the keyboard; the numerical control processing program can also be transmitted to the numerical control system by the programming computer using RS232C or the network communication method.

3. The numerical control device is the core of the numerical control machine tool. The numerical control device fetches or accepts one or several sections of numerical control processing program sent by the input device from the internal memory, and after the logic circuit or system software of the numerical control device is compiled, calculated and logically processed, it outputs various control information and instructions to control the machine tool The work of each part enables it to carry out the prescribed and orderly movements and actions.

4. The driving device accepts the instruction information from the numerical control device, and after power amplification, it drives the moving parts of the machine tool in strict accordance with the requirements of the instruction information to process parts that meet the requirements of the drawing. Therefore, its servo accuracy and dynamic response performance are one of the important factors that affect the machining accuracy, surface quality and productivity of CNC machine tools. The driving device includes two parts: controller (including power amplifier) ​​and actuator. At present, DC or AC servo motors are mostly used as actuators.

5. The main function of the auxiliary control device is to receive the switch quantity command signal output by the numerical control device, after compiling, logically discriminating and moving, and then driving the corresponding electrical appliances after power amplification, and driving the mechanical, hydraulic, pneumatic and other auxiliary devices of the machine tool to complete the instructions The specified switching value acts. These controls include the speed change, reversing and start and stop commands of the moving parts of the spindle, the selection and exchange commands of the tools, the start and stop of the cooling and lubrication devices, the loosening and clamping of the workpiece and machine tool parts, and the indexing of the indexing table. Wait for switch assist action.

6. The machine tool body of the CNC machine tool is similar to the traditional machine tool. It consists of a spindle drive device, a feed drive device, a bed, a table, and auxiliary motion devices, a hydraulic pneumatic system, a lubrication system, and a cooling device. However, the CNC machine tools have undergone great changes in the overall layout, appearance, transmission system, tool system structure, and operating mechanism. The purpose of this change is to meet the requirements of CNC machine tools and give full play to CNC machine tools.

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